why would a man want a woman that looks like a man. Men want someone that has it where it counts if you catch my drift. So It could be a question of how she presents herself? Does she were baggy clothes? She doesn't need to dress slutty, but the key to women attracting men is knowing how to flatter yourself with how you dress.
Another point, I have been working with the youth the last few years and one of the biggest things I have noticed is that most are incapable of flirting. They just don't know how. I don't know what has changed from my generation to theirs, but that has been lost somehow. So, I'll be blunt, does she know how to flirt?